Respirator.



` G. P. JAUBERT.

RBSPIBATOB.

APPLIUATION FILED 1120.20. 1907. @fgf Patented Mar. 9, 1909.

2 SHEETS-SHEET i.

244 if# 'EJ 4 Mw? H G. I" JAUBERT.

BESPIBATOR.

APPLIOMION FILED Dgo. zo, 1901.

Patented Mar. 9, 19%;

2 SHEETS-SHEET 2.

Fig. 2

md 2' (J6 @vim/mf'- UNITE-Dr ,sTATEs PATENT oEEro GEORGE FRANcoisJAUBERT, or PARIS, FRANCE,

RESYIBATOR. y

' Specification ofl Letters Patent.

latenterlY March 9, 1909.

Application sied December 2o, i907. v serial in. 407,376.

To all whom it may concern.'

.Be it known that I, GEORGE FEANoIsy JAUBERT, a .citizen Vof the Reublio of Switzerland, residing atv 155 oulevard Malesherbes, Paris,France, have invented vcertain new and useful lm roved Respirators; ofwhich the following is a specification.

This invention has for its object improvel ments in respiratoryappliances enabling at-` ing n the accompanying drawingz-Figure l is ageneral yiew of a constructional form of the apparatus. Fig. 2 is adetailv view of the modified form of apparatus. f

The' apparatus com rises a battery ofsay.l

four reservoirs a b .c of steel or other appropriate' material-containing air, gas or other respirable gaseous mixtures underpressure. These reservoirs are mounted on a tube z upon which agassupply valve` or cock e is arranged. The reservoirs a b c are indirect communication with this cock; the reservoir d or' emergencyreservoir communicates with the tube z by the intermediary of aseparatevalve or cock f provided with an .operating rod g.

The gas supply valve e is .connected by means of a pipe x with apressure reducing valve/h controlled 'by a handle i and terminating inthe discharge pipe m. The passage x is also rovid'ed'wi-th a pressuregage .j and-a brano valve fc enabling direct communication to beestablished with thepipe which there is mV through the -small branch as.The pipe m,' which is preferably flexible, opens into a regulating bagor pocket o of material impermeable to gas and which may be ilexible orrigid; from this pocket there proceeds the aspiratory pipe p ending in anozzle y on lixed. a mouthpiece n preferably composed of a material suchas indiai'ubber. From the nozzle y there is branched an. expiratory p per rprovided with a valve s o enng outward. he aspiratorypipe p 'li ewisecontains a valve g opening into the place-the reservoirs are chargedwith air, gas

or respirable gaseous mixture under pressure'. At apressure of say 150atmospheres about 90() liters ofjgas can be stored in a reservoir havinga capacity of 1.5 liters, The apparatus is then yfitted to the body ofthe person who is to use it, the reservoir'being y.attached to the chestor to the back by means yof .belts passing through the loops 1, 2, 3,and 4.A Y The india-rubber part n at the end of the nozzle .is placedinthe mouth. Atf'thev beginning the cocks e and f being closedthe cock eis first of all opened, then the handle of the pressure reducing valveis depressed to enable the 4gas to flow through the pipe m into thepocket o, then through the aspiratory pipe toward the pipe y, and themouthpiece fn, which Ais only placed in the mouth after an adequateprovision of gas has collected inthe Apocket o.- The supply through the'reducing valve' h may be regulated in the Vfollowing manner z--Vhen theworkman has only to perform a moderate amount of work, he arranges thehandle i of the reducing valvein such a manner that the valve permits,of a supply of 10vliters of air per minute; when, however, the work ishard, he arranges the handle so as to obtain a supply of 20 liters.-

The aspiration of the air takes place through the pipe p and the valve gpreventing the entrance of unbreathable gases; during expiration, on theother hand, the valve q is closed and the 'valve s opens to permit ofthe escape of the respiration gases. The pressure gage shows thequantity of respirable gas remaining in the cylinders at any moment.

' When the cylinders al t c are empty, the cock f is opened for theconsumption of the reserve of gas in the cylinder or cartridge d.' Theworkman should now retire from the place containing the unbreathableatmosphere, the provision of air remaining in the cylinder d giving himample time to do so. It may happen that owing to rust forming in thesteel cylinders the fine perforations of the reducing valve will becomechoked. The valve 7c is then openedand the respirable gases are able toflow directly into thepipem; in this oase the flow of respirable gasestaking place without any reduction of the pressure, it is, advisable notto open the branch valvec completely, and to withdraw at oncesfroin thefoul atmosphere. presents every guarantee of safety; the workman iswarned that he must withdraw as soon as he perceives that the firstthree cylinders a l) c are exhausetd and the fourth cyl- The apparatusthereforeV esA inder d supplies him with all the air necessary duringsuch withdrawal.v

The duration of respiration permitted by the four cylinders of thisapparatus is from to 45 minutes, according as the supply furnished is 10to 20 liters. The duration of the utilization of the apparatus may ofcourse be increased or diminished by altering the vnumber of cylinders,their dimensions and the pressure of the gas.

Fig. 2- represents' a constructional form of apparatus witha singlereservoir. The reducing valve h is regulated by means' Ao a screw t withstop yoke u. The branch valve c is lconnected by means of a flexiblepipew L with the no'zzlec to which. the discharge pipe is iitted.

The operation of the apparatus is the same; the pressure gage jfurnishes a check on the quantity of air contained in the cylinder candthe branch valve 7c enables the air to reach the mouthpiecedirectlyif the perfora-` respirable gas under pressure, a supply pipeleading from said reservoir, lan asp'lratory pipe, a pressure reducingvalve between the supply'pipe and the aspiratory pipe, akbl passaroundthe ressure-reducing valve, and

manually opera le control valve in the bypass, substantially asdescribed.

' 2. In a lrespiratory appliance of the character described, abattery ofreservoirs for containing a respirable' gas under pressure,'a

su l i e common to said'reservo'irs an. .2

asp1ratory pipe, a pressure reducing valve between the supply plpe andthe aspiratory pipc,f andl a manually operable auxiliary valve Abetweenone of the reservoirs and the supply pipe, substantially as described; i

3. :I na respiratory appliance of the char acterl described, a batteryof reservoirs for containing a respirable gas under pressure, a supplypipe common to said reservoirs, an aspiratory pi e, an adjustablepressure reducing yalve etween the su ply pipe and the as iratory pipe,a by-pass a -out the pressure re ucingvalve, amanually operable controlvalvein the byass, and ja manually operable auxiliary va ve between oneoftllereser-fv voirs :andlthe supply pipe, substantially as described.

InWitness whereof I'have. hereunto set my hand this twenty first day 'ofNovember, 1907. i l

Groer FRANCOIS JAUBERT. In the presence of twoWitnesses.`

- MILTON B. KIRK,

HENRY SCHWAB.

